Automatic control means for mixers



1,4sm1s Sept. 4, 1923.

J; F. ROBE I 1 7 AUTOMATIC CONTROL MEANS FOR MIXERS Original Filed Aug. 11, 1916 2 She s 1 36 m, 1923. V U 1,467,118

- .1. a a I Original Filed Aug. 11. 1916; ZSheets-Sheet 2 l l l l .1) I

El I 6 V awuwstoa v Original application filed August 11,. 1916, Serial No. 114,481. named and this Patented Sept. 4, 1923.

users erases earner m: r. ROBE, or cnnvnnann HEIGHTS, omo, 'assrenon, BY erasure users-slams,

TO KOEHBING COMIPANY, OF MILWAUK COKSIN.

Getober 27, 1920.

T 0 all whom it may concern Be it known that I, JOHN F. Rose, a citizen of the United States, residing at Clev land Heights, in the county of- Cuyahoga and State otOhio', have invented certainnew and useful Improvements 111 Automatic Control Means for Mixers, of which the following is a specification.

This invention appertains to the art of machines designed especially for mix n concrete, or the like, and in its practice embodimenfcontemplates the provision of certain peculiar automatic means whereby as a charge of a gregates to be mixed 1s introduced into't e mixin machine, water A from a suitable source of supplyis caused sary for a complete and proper admixture of the aggregates, has elapsed. By the use of-this lnvention in conjunction with said chute and batch time controlling mechanism the water supply means is put into operation simultaneously with the setting into action of the-timing mechanism, there being common control devices for thetwo. The operation of both the water supply means and the timing mechanism is initiated under the corn.

geous for obvious reasons.

trol of a loading skip or hopper by which the aggregates are Ielevated and placed within the mixer, this control being advanta- In the accompanying drawings- Figure 1 is aside elevation of a mixing machine of a ty e today known as the Kochringipav'er the equipment including means made in accordance with the invert tion" y Figure 2 is a View in elevation showing the box or compartment containin the timingJnd, counting mechanism, an showing "the driving connections with the mixing I l 7 a Figure ,sl10ws on an enlarged scale the application flied Serial Biol 418,974.

locking and throw-over device for the dis charge chute; and

Figure 4; is a view illustrating the water supply actuatmg means and common operatin device for said means and the'timer.

his application is a division of my a plicatlon Serial Number 114,481, tiled August 11, 1916 and patented March '1,

1921, No. 1,370,491 for concrete distributing with the uppermost arm of the lever 2 the materials in the skip gravitate into the miner A, and the said action likewise re' sul ts na tripping or. actuation of hethree armed lever Q-"mountedon the framework W sconsin, 21 oonroaa'rron or W s AUTOMATIC con'rnoze Means-i on MIXERS.

raised by power drlven the control of a clutch.

of the machine andconnectcd by a rod'3 with a lever 4 disposed-above the box 5 1 which encloses the main parts of the'timing mechanism. The lever a ie'conncctedwith a rod 6,. see Figure 2, forming a part of the mixture time controlling mechanism, said rod 6 being encircled by a spring 7 disposed in the box or casing 5 upon which the rodfi slides vertically.

Gn the rodzifi is a projection E; euzlap ted to engage and ntove a lever S When the lever 2 is tripped bygthe engaging action-or" the skip in abutment therewith, the rod fi is raised until the projection. 8 thereon engages the adjacent ofi'standin portion of the lever 9. In this way there 6 is held up by the I lever 9, the spring 7 being compressed. The 8 engaging the lever" action of the projection 9 rocks said lever on its pivot 9-, carried by the back of they box the lever 9 to exert'a pull on a link 10 con nected therewith and connected with a bell crank lever 11 pivoted in the box 5-. the lever 11 is connected with a bar 12 on which 1ijs mounted a sliding toothed timing memer 13.

- 'Normally a spring 14 ,coacts with the lever 9; also normally the projection 8 hears 5, thereby causing .4

hand end of the downwardly on the right 12% with its teeth bar 12 to hold the member disengaged from the worm carried by the shaft 16. which worm is constantly driven through connecting beveled gears 17 and 1n. the former on the shaft 19 and the latter on the shaft 16.

The shaft 19, seen in Figures 1 and 2. has a spur gear 20 in mesh with one of the gear rings 21 surrounding the drum or mixer 91, the parts 16, 17, 18, 19. and :21) being thus driven from the mixer itself.

In the box 5 is adog 2Q pivoted to a le ver 23 which is connected by a link 2-1. the lower end of which, see Figure 3. is attached to a pivoted catch 25. The catch engages a stud 26 on a lever 27 carried by the shaft 28 by which the discharge chute C is actuated. Said shaft- 28 is suitably connected with the discharge chute C to throw the latter from a normal non-discharging position chute to its discharging position. the type ot being such as generall illustrated in U. 0. Letters latent of Pliilip Koehring. No. 1,126,487, patented January 26, 19153.

in the path of the uppermost of the arms of the lever .2 is an actuating bar 29 adapted to slide horizontally on the frame-Work 0 the machine through the projection of suitable guide means 30. This bar 29 carries an upwardly yielclable gravitative dog 31 adapted to engage a stud32 upon a valve lever 33 connected with a valve 3% located at a suitable point in the length of a water pipe 35. The 'pipe 35 leads from a water tank 36 mounted on 1 machine, to apoint just within the charging mixer as seen in Figure 1. no bar 29is adapted to be impinged the latter is rocked end of the end of the by the lever 2 every time on raising of t e 'ip B. i

on actuation of the bar 29by the lever 2 it will be apparent that the dog 31 is caused to engage the stud 32 to rock the lever' 33 and open the valve 34. ,In this mannor as the mixer A is charged with the 'ag gregates from the skip B a predetermined uantity' of water enters the-mixer drum. t a certainpointin the movement of the oar 29 the dog 31 passes over or escapes the stud 32 so gradually returned to its valve closing post; tion under the action of a spring 35' connected with said lever.

The parts 3 and 31 are adapted to be operated so as to close the valve '34 after the necessary quantity of water is admitted to the mixer. The bar 29 remains in its ar tuated position so long as the lever 2 remains in its actuated position but will return to its normal position under the action of a spring 36 when the lever 2 is released at the conclusion of the required time for etfeeting the mixing operation. As the bar 29 returns to its normal position, the dog 31 the frame-work of the that the valve lever 34 may he yields freely upwards and i'eteely passes over the stud 32 in an obvious manner.

it is understood that i do not wish to be confined to the particular automatic for controlling the opening and clos the water supply valve 34 since any suit able means may he employed for the above purpose within the purview of the. inyention .1 r

The actuation of the lever 25 not only operates the water valve mintrol device as above described but results in littiingfoi rod ti raising (l 0 projection Pl which p by the dog 22 at. which stage water is heing admitted to theniixer drum and the aggro gates to be mixed have. been int odnemla into said drum. Furthermore the move ment oi the projection has caused the timin member 13 to engage with the worm 1.5 1 said worm causing thetiming member to move toward the outer end of the bar 121 The time required for the adjustable tripping arm 37 on the timing member 13 to move against the lower end of the lever 9 represents the required perio'il for eitecting a thorough admixture of the materials in the mixer. When the arm 3'2 engages the lower end of the lever 9, the latter is rocked and disengaged from the projection 8 Where upon the projection with the rod 6 is inreed downwards by the spring 7. When the projeetion 8 moves downwards a butler spring 9" cushions the drop of the projection as it strikes the member 12 said spring being interposed between the parts 12 and 10, theheel of the same engages a shoulder 'on the dog 22 and shifts the latter don awards tilt ing the lever 23 and raising the rod 24" The upward movement of the rod 22 pulls tincateh .25 from engagement with the stud '36, see Figure 3, whereupon the discharge chute (l is automatically released and shifted to its discharge position by niea'ns of a spring motor 38 connected with a shaft 28 by which the chute C is actuated; The chute C may be restored to its nondischarging position in any suitable manner, as set forth in the ap )lication above identified now matured into letters Patent #1370397; issued March 1, 19521. 7

It. may restoring movement of the the rod (3 restores the parts their normal positions, the projection itself striking the adjacent end of the bar 12 and The spring 14 forces lmvering the same. the levert) outwards t its upper end, shifts owers the 11% be noted also that the downward projection 8 on the link 10 and lever 11 and ner end of the bar 12 when'the projection 8 is releaseih whereby the timing'mein or 13 is lowered and disengaged from the Worm 15 and remains so disengaged until the rod 6 is raised again by the actuation of the skip llf spring '39 pulls the timing member 13 back to normal position in which it is shown lea lit!

.4, 3, and 2 to v vice and the said automatic means sessile iu Figure 2, on lowering of the her 12. A counter D has its "arm 40 arranged to he ectuated to register a count each time the lever 9 is rocked to the l; as shown, in Figure Having thus described my invention, whetclsiin es new enddesire to obtain by letters Patent is 1. In combination, as mixer, edischarging device therefor, automatic means for moving seid discharging device from non-discharging to dischs. ging position, a, charging device for introducing materials into the mixer, means intermediate said charging dcwhereby one is controlled from the other, water supply means associated with said mixer, and means intermediate the charging device and said water supply means whereby the ection of *lhelotter is controlled from the charging device.

2. In combination, e mixer, a discharging device therefor, water supply means for the mixer, mechanism common to said dis charging device to control the discharging action seems and, to seid water supply means for'slso controlling the action of the latter, and a chewing device for the mixer adapted to controthe oper'ationjo'r" the last mentioned mechanism.

3. In combination, 9. mixer, a discherg ing devicetherefor, a charging device therefor, mechenism adapted to control the discharging device so as to prevent discharging action thereof and controlled from the charging device to cause the discharging device to assume discharge position et at predetermined time, and Water supply means for supplying a predetermined quantity of water to the mixer controlled from the above mentioned mechanism.

4. In combination, e mixer,

water supply means therefor, a discharging device for the mixer, and an actuator common to said water supply means and to the discharging device for controlling the water sup ly action of the water supply means and 101 initiating a subsequent discharging action of the discharging device. Y

5. In combination, e'mixer, water supply means therefor, it discharging device for the mixer, an actuator common to said Water supply means and to the discharging device for controlling the Water supply action of-the Water supply means and for causing discharging of the discharging device subsequently on lapse of a predetermined mixing period, and comprising a lever and operating connections between said lever and the water sup ply means and the discharging device, and a chargingdevice for the mixer adapted to operate said lever es en incidentto each charging action of said charging device.

6. in combination, timing mechanism for e mixing machine, e determining the time into the mixer of both .a timer controllin with the timing mechanism functioningwith the valve operatingmechanism.

' In a mixing machine, a timer controlling the time required for proper mixing water admission control in the machine, a dev ce for the mixer, and means common to the tuner and Water control device for opal",

sting them,

10. In combination, a mixer, a discharging device therefor, means to move the discharging device from non-discharging to. discharging-position, motor means to actuate the last named means, water supply means for the mixer, a batchmel'er controlling the action of the motor means aforesaid so that the discharging operation takes place immediately upon conclusion of a minimum effective period of mixing of the aggregates in the mixer, and a cherging de- Water sup ply means to feed a re ulred amount of vice, and means for causing the e time the said device charges the dry aggregates e mixcr to insure the introduction water to the mixer at t charging into th gates at the commencement of a mixin operation, and mechanism to set the batchmeter into ection charges the IIHXBI to predetermme the time when all the aggregates enter the mixer,

11. In a mixing machine, 8, timer controlling the time required for roper mixing in the machine, a Water admission control device for the mixer, and means to control charging of the machine for controlling the operations of the timer and water admission device.

12. In a. mixing machine, in combination, the time. required for proper mixing in t e machine, a water supply means, 'control admission of water from said supply to the mixer, 21 device for operating the timer and said Water admission control device, and means controlling the charging of the mixer' and adapted to control the operating device for the timer and water admission control means. 13. In combinatiome mixer, a dischar ing device therefor, means to move the discharging device from non-discharging 3:0 discharging position, motor means to actuate the lust named means, water supply liquidv and, dry eggre means for the mixer, 21 batchmeter controlling the action of the motor means aforesaid so that the discharging operation takes place immediately upon conclusion of a minimum effective period of mixing ot the aggregates in the mixer and a charging device, and means controlled by the charging device or causing the Water supply means to feed a required amount of water to the mixer at the time the said charging device charges the dry aggregates into the mixer, to insure the introduction into the mixer of both liquid and dry aggregates at the commencement of a mixing operation; and mechanism to set the batchmeter into action operated and as the charging device charges the by mixer to predetermine the time of action 0? anemia the discharge from the time when all the aggre ates enter the mixer.

l4. n a mixing machine, in combination, a'timer for controlling the proper mixing period of the machine, a water admission control device for the machine a lever, operative connections intermediate said lever and the timer, emd' the lever and water eclmission control device, and means for con trolling the charging ot the machine edagted-to ooerate said lever.

15. iii cans as set forth in claim 14 combined with a discharge for the mixer controlled from the timer.

In testimony whereof I aliix my signature.

JOHN F. none. 

